100x2x1203-120=1230
giúp m nha
K
Khách
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NT
1
23 tháng 3 2020
\(7x-x=5^{120}:5^{117}+3.2^2-7^0\)
\(6x=5^{120-117}+3.4-1\)
\(6x=5^3+12-1\)
\(6x=136\)
\(x=\frac{136}{6}=\frac{68}{3}\)
hok tốt!!
TL
2
DP
27 tháng 12 2018
theo bài ra:
200:x(dư 10)=>200-10:x hay 190:x (x>10) (1)
120:x(dư 6)=>120-6:x hay 144:x (x>6) (2)
Từ (1) và (2)=>x thuộc ƯC (144,190)và x>10
Ta có:
190=2.5.19
144=2.3.19
=>ƯCLN(190,144)=19.2=38
=>ƯC(190,144)=Ư(38)={1;2;19;38}
vì x>10 => x={19;38}
Vậy x={19;38}
6 tháng 5 2019
Keeping the school campus neat and clean is very important for all the students because a school is a place to study and learn. If the physical environment is not an attractive one, then studying and learning become less pleasant and the concentration of the students will be hampered. To keep the school campus neat and clean the students have to do some certain works. Firstly, in every class the students can make a class forum or group and the leader of the forum can divide the works. There are different works in the school campus. According to the instruction of the leader the students will continue the work. Some students of a forum can arrange of garbage and rubbish in waste disposal containers, take care of the gardens and trees. Similarly, another group can keep the plants well-trimmed, mow the lawn, and trim the grass around the borders. Other group can rake the fallen leaves, keep the statues well-polished, mop and vacuum the floors and carpets inside. Some can clean the walls, windows and other surfaces. To keep the campus always neat and clean the students can make some rules permanently both inside and outside of the classroom. Firstly, students should not spit in the class, drop litter in the class. Secondly, they have to use the bin for trash and keep the desks and chairs in place. At the time of performing the works they can get any help from their class teacher and other teachers. In this process the students can keep their school campus neat and clean.
CV
15 tháng 6 2017
Dear,.....................
I'm ( My name is ) ....... I'm ...... years old. I'm from ........ I'm very happy to send you this email about my school.
I'm am grade..... and in class ....... My school 's name is .... It is located in ..... a small town near Ha Noi Capital.
It is a big and large school. The school has many trees and there has enough stadiums and sporting yards for students to play. The thing I expect the most, that is a great learning school with many modern equipments. One more thing, the students of the school are friendly and helpful and the teachers are good too. That's all of the school in my dream. I proud of my school. I love it so much.
Loves ............
KC
0
AT
13 tháng 6 2017
Ta có: \(\widehat{O_1}+\widehat{yOz}=\widehat{xOy}\) (2 góc kề nhau)
hay \(\widehat{O_1}+90^o=120^o\)
=> \(\widehat{O_1}=120^o-90^o=30^o\)
Lại có: \(\widehat{O_3}+\widehat{xOt}=\widehat{xOy}\) (2 góc kề nhau)
hay \(\widehat{O_3}+90^o=120^o\)
\(\Rightarrow\widehat{O_3}=120^o-90^o=30^o\)
Có: \(\widehat{O_1}+\widehat{O_2}+\widehat{O_3}=\widehat{xOy}\) (các góc kề nhau)
hay \(30^o+\widehat{O_2}+30^o=120^o\)
\(\Rightarrow\widehat{O_2}=120^o-30^o-30^o=60^o\)
hay \(\widehat{tOz}=60^o\)
S
17 tháng 10 2017
Viết một đoạn văn nói về ước mơ của em trong tương lai:
When I was young, I had a dream. It was to become a Fashion Designer. I always wanted to be a Fashion Designer because fashion can make people feel confident or powerful. Or they can be comforting. Clothing can be an artistic expression a projection of the image people want the world to see. But that’s not my dream job anymore. I want to be doctor. Doctor is my dream job because I can help people and being doctor sounds nice.
If you want to be a doctor you have to work very hard. First you have to pass high school with all courses of maths, physics and chemistry. That’s only problem for me. I’m not very talented at school but I'm trying best. After high school you have to study hard 56 years in university school before you ca become a doctor. When you are doctor you get good pay but you have long working hours. I’m not really sure can I ever be a doctor but I hope my dream comes true. If don’t maybe i want to start new company.
Chúc bạn hc giỏi!!!
17 tháng 10 2017
My dream is that when I grow up, I will have a normal life as normal people, doing a favorite job and repay the father and mother. My dream is just that. What about you, what is your dream?
em lp 5 nha anh
nghỉ hè rồi mà vẫn còn bài tập hay sao ?
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